Arc'teryx Proton Hoody

The Proton Hoody is a breathable synthetic insulated jacket engineered for high-output mountain days in cold conditions. Built around an air-permeable Fortius Air 20 face fabric, it balances weather resistance, stretch and durability while letting excess heat and moisture escape. Inside, 100% recycled Coreloft Compact insulation delivers lightweight, packable warmth that keeps performing even when damp, and a PFAS-free DWR finish sheds light moisture.